<ActivityScreen>:
    BoxLayout:
        orientation: 'vertical'
        GoblinActionBar:
            on_open_previous: root.open_previous()
        ActivityFeed:
            id: rv
            # data: root.activity_data
            key_viewclass: 'viewclass'
            key_size: 'height'
            animation_delegate: root
            feed_service: root.activity_service
